panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x40 pc=0x74d785] goroutine 930555 [running]: panic({0x100df60?, 0x26ac480?}) GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc001de4cc8 sp=0xc001de4c18 pc=0x43a72c runtime.panicmem(...) GOROOT/src/runtime/panic.go:261 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:861 +0x378 fp=0xc001de4d28 sp=0xc001de4cc8 pc=0x451f38 gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).IncRef(0x1000f00?) pkg/sentry/vfs/mount.go:693 +0x5 fp=0xc001de4d30 sp=0xc001de4d28 pc=0x74d785 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc000440e60, 0x0) pkg/sentry/vfs/namespace.go:143 +0x17b fp=0xc001de4e00 sp=0xc001de4d30 pc=0x7521fb gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc000440be0, 0xc002077e00) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de4ed0 sp=0xc001de4e00 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc00242d7c0, 0xc002077d60) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de4fa0 sp=0xc001de4ed0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc000475180, 0xc002077cc0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5070 sp=0xc001de4fa0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4460, 0xc002077c20) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5140 sp=0xc001de5070 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4500, 0xc002077b80) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5210 sp=0xc001de5140 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b45a0, 0xc002077ae0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de52e0 sp=0xc001de5210 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4640, 0xc002077a40) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de53b0 sp=0xc001de52e0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4820, 0xc0020779a0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5480 sp=0xc001de53b0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b46e0, 0xc002077900) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5550 sp=0xc001de5480 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b43c0, 0xc002077860) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5620 sp=0xc001de5550 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4320, 0xc0020777c0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de56f0 sp=0xc001de5620 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b48c0, 0xc002077720) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de57c0 sp=0xc001de56f0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4280, 0xc002077680) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5890 sp=0xc001de57c0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4960, 0xc0020775e0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5960 sp=0xc001de5890 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4a00, 0xc0020774a0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5a30 sp=0xc001de5960 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4aa0, 0xc002077400) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5b00 sp=0xc001de5a30 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4d20, 0xc002077360) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5bd0 sp=0xc001de5b00 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4dc0, 0xc0020772c0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5ca0 sp=0xc001de5bd0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4c80, 0xc002077220) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5d70 sp=0xc001de5ca0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4be0, 0xc0020770e0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5e40 sp=0xc001de5d70 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4e60, 0xc002077180) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5f10 sp=0xc001de5e40 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b50e0, 0xc002077040) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de5fe0 sp=0xc001de5f10 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5040, 0xc002076fa0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de60b0 sp=0xc001de5fe0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5220, 0xc002076f00) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6180 sp=0xc001de60b0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b52c0, 0xc002076e60) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6250 sp=0xc001de6180 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4fa0, 0xc002076dc0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6320 sp=0xc001de6250 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5360, 0xc002076d20) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de63f0 sp=0xc001de6320 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5400, 0xc002076c80) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de64c0 sp=0xc001de63f0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b4f00, 0xc002076be0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6590 sp=0xc001de64c0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5540, 0xc002076b40) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6660 sp=0xc001de6590 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b55e0, 0xc002076aa0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6730 sp=0xc001de6660 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5680, 0xc002076a00) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6800 sp=0xc001de6730 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b54a0, 0xc002076960) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de68d0 sp=0xc001de6800 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5860, 0xc0020768c0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de69a0 sp=0xc001de68d0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5900, 0xc002076820) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6a70 sp=0xc001de69a0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b59a0, 0xc002076780) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6b40 sp=0xc001de6a70 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5ae0, 0xc0020766e0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6c10 sp=0xc001de6b40 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5b80, 0xc002076640) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6ce0 sp=0xc001de6c10 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5cc0, 0xc002076500) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6db0 sp=0xc001de6ce0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5c20, 0xc002076460) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6e80 sp=0xc001de6db0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5ea0, 0xc0020763c0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de6f50 sp=0xc001de6e80 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0430b5f40, 0xc002076320) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de7020 sp=0xc001de6f50 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc0004417c0, 0xc0020761e0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de70f0 sp=0xc001de7020 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc01e5bc280, 0xc002076140) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de71c0 sp=0xc001de70f0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc000441720, 0xc0020760a0) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de7290 sp=0xc001de71c0 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00439d610, 0xc00439d620, 0xc000440b40, 0xc002076000) pkg/sentry/vfs/namespace.go:147 +0x226 fp=0xc001de7360 sp=0xc001de7290 pc=0x7522a6 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).CloneMountNamespace(0xc0004fba60, {0x13e0f38, 0xc01e4a9500}, 0xc00061c8a0, 0xc000528300, 0x0?, 0xc000f2d4f0?, {0x13c4740, 0xc0004fb880}) pkg/sentry/vfs/namespace.go:186 +0x390 fp=0xc001de7440 sp=0xc001de7360 pc=0x7526b0 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc01e4a9500, 0xc001de7818) pkg/sentry/kernel/task_clone.go:205 +0xfc5 fp=0xc001de7808 sp=0xc001de7440 pc=0x91a225 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x2?, 0xc01e4a9500?, 0x5646cd30cf88?, 0x0?, 0x0?, 0x0?) pkg/sentry/syscalls/linux/sys_thread.go:215 +0xa7 fp=0xc001de78d8 sp=0xc001de7808 pc=0xa97e27 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc01e4a9500?, 0x10101?, {{0x240a0400}, {0x200013a0}, {0x200013c0}, {0x20001400}, {0x20001440}, {0x20001440}}) pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x2c fp=0xc001de7918 sp=0xc001de78d8 pc=0xa61e0c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc01e4a9500, 0x38, {{0x240a0400}, {0x200013a0}, {0x200013c0}, {0x20001400}, {0x20001440}, {0x20001440}}) pkg/sentry/kernel/task_syscall.go:142 +0x673 fp=0xc001de7c58 sp=0xc001de7918 pc=0x938793 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc01e4a9500, 0xc0079adc88?, {{0x240a0400}, {0x200013a0}, {0x200013c0}, {0x20001400}, {0x20001440}, {0x20001440}}) pkg/sentry/kernel/task_syscall.go:322 +0x45 fp=0xc001de7cb8 sp=0xc001de7c58 pc=0x939905 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000f2dcf8?, 0x1217c18?, {{0x240a0400}, {0x200013a0}, {0x200013c0}, {0x20001400}, {0x20001440}, {0x20001440}}) pkg/sentry/kernel/task_syscall.go:282 +0x59 fp=0xc001de7d18 sp=0xc001de7cb8 pc=0x939619 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00051bba0?) pkg/sentry/kernel/task_syscall.go:257 +0x2d5 fp=0xc001de7e10 sp=0xc001de7d18 pc=0x9393b5 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc01f19d780?, 0xc01e4a9500) pkg/sentry/kernel/task_run.go:269 +0xfb7 fp=0xc001de7f48 sp=0xc001de7e10 pc=0x92d677 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc01e4a9500, 0x8857) pkg/sentry/kernel/task_run.go:98 +0x1ef fp=0xc001de7fc0 sp=0xc001de7f48 pc=0x92c00f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1() pkg/sentry/kernel/task_start.go:395 +0x25 fp=0xc001de7fe0 sp=0xc001de7fc0 pc=0x9370a5 runtime.goexit() src/runtime/asm_amd64.s:1650 +0x1 fp=0xc001de7fe8 sp=0xc001de7fe0 pc=0x471241 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 930634 pkg/sentry/kernel/task_start.go:395 +0xe5